Medications are being found in our rivers and lakes. Will these chemicals
affect the plants and animals that live in our waterways? This activity
looks at the effect of these medication levels on the fresh water animals;
daphnia.

Will Global Warming
Push Trees to Extinction? The EPA estimates that for each 1 degree of global warming the average temperature for an area will move north 100 miles over the next 100 years. What will happen to trees' ranges?

Peppered Moths In England between 1800 and 2000 peppered moths changed from white to black and back to white again. In this activity we will examine how scientists tried to explain why peppered moths changed color.

Calories What are calories? How many of these calories do you need to live? How many do you need to do the things you do? Are you eating enough to provide you with the calories you need? The answer to these questions are explored in this model. Health related issues such as dieting are also discussed in this model.